I got scammed once, then almost in the second time.
The first one is when suddenly the ICO I participated in asked us to send 0.1ETH to them as part of KYC, right then I knew I've been scammed.
The second one when scammers set up fake accounts and goad me to send ETH to him, it's a good thing that admin was quick to respond in my inquiry.
That all was quite disappointing.